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Tillamook 266MHz and working L2 cache?

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Reply 500 of 506, by Sphere478

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Re: IDT Winchip 2A PR266 a.k.a "Weirdo"

Anyone have a functioning setup live at the moment for a test?

Sphere's PCB projects.
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Sphere’s socket 5/7 cpu collection.
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SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
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Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 501 of 506, by JustJulião

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Sphere478 wrote on 2024-02-27, 13:35:

Re: IDT Winchip 2A PR266 a.k.a "Weirdo"

Anyone have a functioning setup live at the moment for a test?

I don't know what you want to test, but both the rig from the linked thread and one with a modded Tillamook on a MVP3 mb with cache are running here.

Reply 502 of 506, by Sphere478

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JustJulião wrote on 2024-02-28, 18:51:
Sphere478 wrote on 2024-02-27, 13:35:

Re: IDT Winchip 2A PR266 a.k.a "Weirdo"

Anyone have a functioning setup live at the moment for a test?

I don't know what you want to test, but both the rig from the linked thread and one with a modded Tillamook on a MVP3 mb with cache are running here.

Was curious about the response from the chip when intel bf2 was pulled high. Changing bf0, bf1.

From what I recall, intel bf2 basically defaults to pull down when floating.

And when bf2 is pulled down bf0,1 provide 133-233 mhz options.

But when intel bf2 is pulled high the chip always is at 266 no matter what bf0,1 are set to.

If someone can verify that. Not with my setup atm.

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 503 of 506, by Sphere478

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https://www.ebay.com/itm/176350362839

166mhz tillys spotted

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Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 505 of 506, by Sphere478

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Show picture of mods are, update, bios, have you verified the voltage is correct

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 506 of 506, by bloodem

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I'm thinking of modding one of my Tillamook 266 CPUs, but after skimming through the thread, it's still unclear to me if the 4x multiplier mod would actually lock it to 4x (as in, without the possibility of selecting lower multipliers, which would be unacceptable to me).
FYI, I'd like to use it on an Asus TX97-XE (430TX ATX board) that I just repaired, which does not have a 4x setting. This board is rock solid at 83 MHz FSB, which means that 333 MHz is achievable with an unlocked 4x multi, but I absolutely need those lower multipliers as well.

1 x PLCC-68 / 2 x PGA132 / 5 x Skt 3 / 9 x Skt 7 / 12 x SS7 / 1 x Skt 8 / 14 x Slot 1 / 5 x Slot A
5 x Skt 370 / 8 x Skt A / 2 x Skt 478 / 2 x Skt 754 / 3 x Skt 939 / 7 x LGA775 / 1 x LGA1155
Current PC: Ryzen 7 5800X3D
Backup PC: Core i7 7700k